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The testo 552 digital micron gauge is ideal for monitoring the evacuation of air conditioning, refrigeration, and heat pump systems. It is rich in features that make your work faster, easier, and more accurate.

Precise and reliable vacuum measurements, 1 micron resolution

Displays the saturation temperature of H2O to ensure full and proper evacuation

Air flow measurements in ventilation ducts, temperature measurements in laboratories, humidity measurements in production, pressure difference measurements in clean rooms – the testo 480 temperature and humidity meter comes with a wide range of optional sensors that allow you to measure, analyze, and log these and a variety of other parameters with only one device.

The testo 622 thermohygrometer and barometer is designed to provide you with an at-a-glance look at the air temperature, pressure, and RH. Ideal for monitoring the ambient air, especially in laboratories during calibration and experimental setups.

The testo 435-4 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-4.

The testo 435-2 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-2.

The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity, and dew point – in compressed air as well. State of the art technology and a large selection of probes, which are available optionally, allow for a wide variety of measuring possibilities.

Probes available as an option mean you can measure air humidity, temperature, absolute pressure, and dew point in compressed air

The testo 435-1 is an economic multifunction meter capable of monitoring, analyzing, and diagnosing indoor air quality. In addition, you can easily pinpoint and troubleshoot airflow problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-1.

The testo 435-3 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot airflow problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-3.